I'm late to the game, as usual...
Perry BIF are not really suitable for the 1885 NW Rebellion, but unfortunately there aren't too many figures that are! Keeping them in Canada (or at least what is NOW Canada!) BIF could be used for the Fenian Raids, or for the enterprising, in a alternate history version of Wolseley's Red River Expedition or for the San Juan Island Pig War.
As for 1885, I've not quite found the right figures yet (in 28mm), other than Rafm which don't quite match up with any other figures.